Refer to the exhibit. A network engineer must update the routing toward the web server with IP address 35.22.13.1. The primary path must be configured via the neighbor router with ID 1.1.1.1. However, local-preference configuration is not permitted on R1. Which task must the engineer perform on R1 to complete the implementation?
To configure the primary path via the neighbor router with ID 1.1.1.1 without adjusting the local preference on R1, MED (Multi-Exit Discriminator) comparison needs to be used. The enable MED comparison between routes from neighbors in different autonomous systems (AS) is required. This is done using the command 'bgp always-compare-med'. This will allow R1 to select the path with the lowest MED value as the best path even if they come from different AS. The deterministic MED option only applies to routes within the same AS. Therefore, the correct task is to enable MED comparison between routes from neighbors in different AS.
Answer is C. https://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/16046-bgp-med.html#examp1
I think Deterministic Med will select the last entry as the best as it is external. Always-compare-med should be used to select 1.1.1.1 ... Ans C seems to be correct
C is correct answer
C is correct
I was confused as it appears to be typo on the IP address of the web server.
https://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/16046-bgp-med.html#examp1 For example, consider the following routes for network 10.0.0.0/8: entry1: AS(PATH) 500, med 150, external, rid 172.16.13.1 entry2: AS(PATH) 100, med 200, external, rid 1.1.1.1 entry3: AS(PATH) 500, med 100, internal, rid 172.16.8.4 Example 2: bgp deterministic-med Disabled, bgp always-compare-med Enabled Entry1 is compared to entry2. These entries are from different neighbor autonomous systems, but since the bgp always-compare-med command is enabled, MED is used in the comparison. Of these two entries, entry1 is better because it has a lower MED. Next, entry1 is compared to entry3. The MED is checked again because the entries are now from the same autonomous system. Entry3 is chosen as the best path.
https://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/16046-bgp-med.html#examp1 For example, consider the following routes for network 10.0.0.0/8: entry1: AS(PATH) 500, med 150, external, rid 172.16.13.1 entry2: AS(PATH) 100, med 200, external, rid 1.1.1.1 entry3: AS(PATH) 500, med 100, internal, rid 172.16.8.4 Example 2: bgp deterministic-med Disabled, bgp always-compare-med Enabled Entry1 is compared to entry2. These entries are from different neighbor autonomous systems, but since the bgp always-compare-med command is enabled, MED is used in the comparison. Of these two entries, entry1 is better because it has a lower MED. Next, entry1 is compared to entry3. The MED is checked again because the entries are now from the same autonomous system. Entry3 is chosen as the best path.
Enabling the bgp deterministic-med command ensures the comparison of the MED variable when choosing routes advertised by different peers in the same autonomous system. Enabling the bgp always-compare-med command ensures the comparison of the MED for paths from neighbors in different autonomous systems. https://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/16046-bgp-med.html
bgp deterministic-med command compares MED variable when choosing routes advertised by different peers inside the same autonomous system. bgp always-compare-med command compares MED variable for paths from neighbors in different autonomous systems.